Update: the smaller ones have gone away since I raised the temperature and the first and second ones to apper(the worst) are still there. Now, I originally kept the temperature in his tank at 82f, but I was told it was too high and lowered it after two weeks. Could this be the cause?

It's going away now that the temperature has been raised. He has been digging behind his lava rock as well and he colored up when he discovered the feeders were food. His stripes have dissapeared again, though. I'm puzzled. The two bad ones are still there.